folk are correct about the lock should be on other side, however for an artistic design/explanation your image does "work" and is only way you can practically show it as an artist, people forget that!

though the butt would need to be "taller" and have a brass plate, both from practical need and actual book explanation Butt has to spread the shock of firing, that one is too narrow and would smash your shoulder hard, recoil on a .50 cla black powder rifle like that would be seriously powerfulmilitary rifles had brass butt plates largely because of way they were used in training the old fashioned "square bashing" as the British Army would say (grounding the riflere peatedly would end up wearing the wood) and for fighting

I don't know how they'd do the stock/trigger design, I can't remember if the books saythink a "thumb hole", all in one design is more likely than a pistol grip because an all in one is tougheror maybe like the Russian "Dragunov" styleimg0.etsystatic.com/114/0/7000…

Interesting design. I think moving the hammer mechanism forward, just behind the trigger to keep it "bullpup" in design, could make it more functional. At the moment, it looks as though the firer will end up blinding themselves the moment they pull the trigger.

P.s. Blackpowder muskets operate by pouring powder down the barrel, compacting it with the ramrod, followed by wading and the bullet and ramming them down the barrel until they're against the powder. Then you open the firing pan, pour in some powder, close it, cock the hammer and so on. When you pull the trigger, the hammer strikes the firing pan. Whatever mechanism you're using to ignite the powder - matchlock, wheellock, flintlock, caplock - will create a flash that ignites the blackpowder in the main barrel.

Why do think this one would never work? The other guys pointed outed the faults with a bullpup. Why do you think that this would hurt the shoulder when it has the same charge that a regular rifle would.

A left handed Flintlock putting the flash and touch hole spray right in the shooter's face? Also a long way from trigger to sear should have a trigger pull around 300 pounds! AS RFC says just saying. Good job on art just the mechanics are a bit odd to this gunsmith.